Dual roll rotary microfilmer for 25x reduction or less

Details Dual roll rotary microfilmer for 25x reduction or less Dual roll rotary microfilmer for 25x reduction or less

1992-09-08

1994-01-18

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Copying both sides of original

G03B 2732, G03B 2752

Patent

active

052803210

ABSTRACT:
A 16 mm rotary microfilmer that operates in 25.times. duplex mode that simultaneously photographs both sides of a document. Each side of the document is imaged onto a separate roll of film resulting in greater resolution and easier readability. The microfilmer gives the same numerical address to the images of each side of the document so that the images of the front and rear of the document are easily mated to each other and identified as a single document to reduce confusion in the retrieval process.

REFERENCES:
patent: 2194808 (1940-03-01), Pooley
patent: 2552266 (1951-05-01), Egan et al.
patent: 2578320 (1951-12-01), Schubert
patent: 2787190 (1957-04-01), McWhirter et al.
patent: 3212399 (1965-10-01), Walter
patent: 3320853 (1967-05-01), Froese
patent: 3885871 (1975-05-01), Galatha et al.
patent: 4734742 (1988-03-01), Klumpp et al.
patent: 5208627 (1993-05-01), Yoshihara et al.

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